Target downtown SF whole milk 3.95/ga
Website shows $3.89/ga for the ‘Good & Gather’ brand at the store in San Ramon, so the SF pricing isn’t bad at all.
A couple more data points, here:
Whole Milk at Lucky, Concord, CA: $4.99/ga
Smart & Final in Pleasant Hill commonly has it for less than $4/ga — I think $3.79/ga was the last price I paid there.